Date: Wed, 21 Aug 2002 14:04:27 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Gianmarco Giovannelli <gmarco@giovannelli.it> Cc: questions@FreeBSD.ORG Subject: Re: Porting from win32 to UNIX: Sockets Message-ID: <20020821190426.GD97484@dan.emsphone.com> In-Reply-To: <5.1.1.6.2.20020821204121.02ad7008@194.184.65.4> References: <5.1.1.6.2.20020821204121.02ad7008@194.184.65.4>
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In the last episode (Aug 21), Gianmarco Giovannelli said:
> Hi a friend of mine involved in a porting project.
> He has asking me something about socket and more I am not able to answer
> :-)
>
> Thanks for your attention...
>
> --- begin ---
>
> [...]
> that are familiar with "low-level-TCP/IP" coding.
> plz help
>
> following problem:
> I don't know how to get an errorcode in case of socket-operation failed
> (send/recv)
> in windows it goes like this
>
> e.g
> res = send(....);
> if (res==SOCKET_ERROR)
> {
> err = WSAGetLastError();
> if (err==....) ...;
> }
>
> but how to do this in linux/UNIX/BSD ?
> what's the equivalent of WSAGetLastError ?
On Unix, the send function returns -1, and the error is stored in the
global 'errno' variable. "man errno" for more information.
--
Dan Nelson
dnelson@allantgroup.com
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